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Frontiers in Optics, FiO_2019

作者： Hu, Guoqing Song, Yang Zheng, Zheng Guan, Yingchun School of Mechanical Engineering and Automation Beihang University Beijing100083 China Hefei Innovation Research Institute of Beihang University Xinzhan Hi-tech District Anhui230012 China School of Electronic and Information Engineering Beihang University Beijing100083 China Beijing Advanced Innovation Center for Big Date-based Precision Medicine Beihang University Beijing100083 China Collaborative Innovation Center of Geospatial Technology 129 Luoyu Road Wuhan430079 China National Engineering Laboratory of Additive Manufacturing for Large Metallic Components Beihang University Beijing100083 China

We experimentally demonstrate a carbide-free femtosecond laser bone drilling with real-time parameter optimization based on on-line spectral monitoring after second-harmonic-generation green positioning, indicating a ... 详细信息

ISBN: (纸本)9781943580675

关键词： Femtosecond lasers

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Rumor Spreading Model with Immunization Strategy and Delay Time on Homogeneous Networks

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Communications in Theoretical Physics 2017年第12期67卷 803-810页

作者：王静王亚奇李敏 Xi'an Research Institute of Hi-Tech Department of Electronics Technology Engineering University of the Chinese People's Armed Police Force

In order to prevent and control the spread of rumors, the implementation of immunization strategies for ignorant individuals is very necessary, where the immunization usually means letting them learn the truth of *** the facts that there is always a delay time between rumor spreading and implementing immunization, and that the truth of rumors can also be spread out, this paper constructs a novel susceptible-infected-removed(SIR) *** propagation dynamical behaviors of the SIR model on homogeneous networks are investigated by using the meanfield theory and the Monte Carlo method. Research shows that the greater the delay time, the worse the immune effect of the immunization strategy. It is also found that the spread of the truth can inhibit to some extent the propagation of rumors, and the trend will become more obvious with the increase of reliability of the truth. Moreover, under the influence of delay time, the existence of nodes' identification force still slightly reduces the propagation degree of rumors.

关键词： rumor propagation immunization strategy delay time homogeneous network

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Saponin, Polyphenol, Flavonoid content and α-glucosidase Inhibitory Activity, Antioxidant Potential of Launaea sarmentosa Leaves grown in Ben Tre province, Vietnam

Saponin, Polyphenol, Flavonoid content and α-glucosidase In...

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2018 International Conference on Mechanical engineering, Materials Science and Civil engineering, ICMEMSCE 2018

作者： Them, Le Thi Tuong Nguyen Dung, Phu Thi Nhat Trinh, Pham Tong Hung, Quach Tuong, Le Nguyen Trong Tuan, Nguyen Duc Lam, Tri Thuy Nguyen, Van Dung, Le Tien Institute of Applied Materials Science Vietnam Academy of Science and Technology Ho Chi Minh city Viet Nam Faculty of Chemical Engineering and Food Technology Nguyen Tat Thanh University Ho Chi Minh City Viet Nam Graduate University of Science and Technology Vietnam Academy of Science and Technology Ha Noi Viet Nam Vietnam Sarmentosa Joint Stock Company Ben Tre Province Viet Nam Faculty of Natural Sciences Tien Giang University Tien Giang Province Viet Nam College of Natural Sciences Can Tho Univesity Can Tho City Viet Nam NTT Hi-Tech Institute Nguyen Tat Thanh University Ho Chi Minh City Viet Nam

Launaea sarmentosa (Willd) *** Kuntze, a creeping herb, belongs to family Asteraceae. It is distributed in sandy coasts of India, Sri Lanka, Malaysia, East Africa and Vietnam. In Vietnamese folk medicine, whole plant possess tonic, soporific, diuretic, laxative properties and the roots are used to benefit milk for mothers after childbirth, instead of Lactuca indica. Up to now, the phytochemicals and bioactivities of this plant are not yet been examined. The present study was designed to investigate the saponin, polyphenol and flavonoid contents as well as α-glucosidase inhibitory and antioxidant activities of the leaves of L. sarmentosa. Preliminary phytochemical screening of this plant were found to give positive reactions for flavonoid, saponin, alkaloid, tannin, and steroid compounds. The result of quantitative determination showed that the leaves contains high amount of polyphenol compounds (290.90 mg GAEs/g extract), lower amount of flavonoids (85.47 mg QEs/g extract) and the saponin content was found to be 10.8 % (per dry weight). As expected, the ethanol extract had a antioxidant potential with IC50 value of 24.15 μg/mL in DPPH experiment, compared to that of vitamin C. Meanwhile, the α-glucosidase inhibitory assay showed inhibited enzyme activity with IC50 value of 67.09 μg/ml. © Published under licence by IOP Publishing Ltd.

关键词： Diagnosis

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Corrigendum to “The removal of phospholipid from crude rapeseed oil by enzyme-membrane binding” [J. Food Eng. 280 (2020) 109910]

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Journal of Food engineering 2021年 288卷

作者： Zhi Gang Hou Xin Min Cao Lili Cao Guo Qing Ling Zhen Yu Yu Min Pang Pei Zhou Yang Shao Tong Jiang School of Food and Biological Engineering Hefei University of Technology 230009 Hefei Anhui PR China Key Laboratory for Agricultural Products Processing of Anhui Province Hefei University of Technology 230009 Hefei Anhui PR China Jiangsu JiuAnYuan Hi-Tech Co. Ltd. Nanjing Jiangsu PR China Anhui Institute of Agro-Products Intensive Processing Technology 230009 Hefei Anhui PR China

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Analysis of food grater mechanism by using engineering analysis tools

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AIP Conference Proceedings 2021年第1期2339卷

作者： R. M. Farizuan Z. Shayfull H. Radhwan M. S. Afifah Shafeeq Ahmad Shamim Ahmad hidayatul Husna binti Al Rashid Nurin Syuhada Noorazman Muhammad Iqbal Talib Muhammad Adam Al-Modthaqim Muhammad Basri 1School of Manufacturing Engineering Universiti Malaysia Perlis Kampus Tetap Pauh Putra 02600 Arau Perlis Malaysia 2Green Design and Manufacture Research Group Center of Excellence Geopolymer and Green Technology (CEGeoGTech) Universiti Malaysia Perlis 01000 Kangar Perlis Malaysia 3Medical Engineering Technology Section Universiti Kuala Lumpur-British Malaysian Institute 53100 Gombak Selangor Malaysia 4Jache Sdn. Bhd. Lot 16 Admin Center Jalan Hi-Tech 2/7 Kulim Hi-Tech Park 09000 Kulim Kedah Malaysia

In the proposed study, this project will only focus on all possible users not limited to certain population only. The sample of this study was taken among respondents from various age and professions. They were mostly housewives and students who is very familiar in-house chores in their daily lives. A research is made on how they usually sliced or shred their vegetables when cooking and how they think about the method that they have been used. A further investigation was done on the problems they faced while slicing the foods as how they normally did. Through some interview and questionnaire sessions, it was found that most of the respondents use manual way in cutting and slicing their vegetables and this led to several problems. The problems where it requires too much energy, consume too much time and not productive enough for large amount of vegetables.

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Extraction conditions of Polyphenol, Flavonoid compounds with Antioxidant activity from Veronia amygdalina Del. Leaves: Modeling and optimization of the process using the response surface methodology RSM 9

Extraction conditions of Polyphenol, Flavonoid compounds wit...

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9th International Conference of Materials Processing and Characterization, ICMPC 2019

作者： Ngoc, Yen Nguyen Thi Tri, Duc Lam Khanh, Quan Nguyen Huu Nguyen, Duy Chung Duong Dinh Chinh Bach, Long Giang Faculty of Pharmacy Nguyen Tat Thanh University Ho Chi Minh City Viet Nam NTT Hi-Tech Institute Nguyen Tat Thanh University Ho Chi Minh City Viet Nam Center of Excellence for Biochemistry and Natural Products Nguyen Tat Thanh University Ho Chi Minh City Viet Nam Faculty of Chemical Engineering and Food Technology Nguyen Tat Thanh University Ho Chi Minh City Viet Nam

This study aims to determine optimal conditions for extraction of phenolic compounds with maximum antioxidant activity from Vernonia amygdalina Del. leaves using Response Surface Methodology and Central Composite Design (RSM-CCD). Results showed that extracting time, temperature and solvent to material ratio had a significant effect on phenolic content (p © 2019 Elsevier Ltd. All rights reserved.

关键词： Ascorbic acid

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Supernova 2020wnt: An Atypical Superluminous Supernova with a hidden Central Engine

arXiv

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arXiv 2022年

作者： Tinyanont, Samaporn Woosley, Stan E. Taggart, Kirsty Foley, Ryan J. Yan, Lin Lunnan, Ragnhild Davis, Kyle W. Kilpatrick, Charles D. Siebert, Matthew R. Schulze, Steve Ashall, Chris Chen, Ting-Wan De, Kishalay Dimitriadis, Georgios Dong, Dillon Z. Fremling, Christoffer Gagliano, Alexander Jha, Saurabh W. Jones, David O. Kasliwal, Mansi M. Miao, Hao-Yu Pan, Yen-Chen Perley, Daniel A. Ravi, Vikram Rojas-Bravo, César Sfaradi, Itai Sollerman, Jesper Alarcon, Vanessa Angulo, Rodrigo Clever, Karoli E. Crawford, Payton Couch, Cirilla Dandu, Srujan Dhara, Atirath Johnson, Jessica Lai, Zhisen Smith, Carli Department of Astronomy and Astrophysics University of California Santa CruzCA95064 United States Division of Physics Mathematics and Astronomy California Institute of Technology PasadenaCA91125 United States The Oskar Klein Centre Department of Astronomy Stockholm University AlbaNova StockholmSE-106 91 Sweden Department of Physics and Astronomy Northwestern University EvanstonIL60208 United States Space Telescope Science Institute 3700 San Martin Drive BaltimoreMD21218 United States The Oskar Klein Centre Department of Physics Stockholm University AlbaNova StockholmSE-106 91 Sweden Department of Physics Virginia Tech BlacksburgVA24061 United States MIT-Kavli Institute for Astrophysics and Space Research 77 Massachusetts Ave. CambridgeMA02139 United States School of Physics Trinity College Dublin The University of Dublin Dublin 2 Ireland Department of Astronomy University of Illinois at Urbana-Champaign 1002 W. Green St. IL61801 United States Department of Physics and Astronomy Rutgers The State University of New Jersey PiscatawayNJ United States Gemini Observatory NSF’s NOIRLab 670 N. A’ohoku Place Hilo HI96720 United States Graduate Institute of Astronomy National Central University 300 Zhongda Road Zhongli Taoyuan32001 Taiwan Astrophysics Research Institute Liverpool John Moores University IC2 Liverpool Science Park 146 Brownlow Hill LiverpoolL3 5RF United Kingdom Racah Institute of Physics The Hebrew University of Jerusalem Jerusalem91904 Israel Department of Physics and Astronomy The Johns Hopkins University BaltimoreMD21218 United States Department of Biomolecular Engineering and Bioinformatics Baskin School of Engineering University of California Santa CruzCA95064 United States Ken and Mary Alice Lindquist Department of Nuclear Engineering The Pennsylvania State University University ParkPA16802 United States

We present observations of a peculiar hydrogen- and helium-poor stripped-envelope (SE) supernova (SN) 2020wnt, primarily in the optical and near-infrared (near-IR). Its peak absolute bolometric magnitude of −20.9 mag and a rise time of 69 days are reminiscent of hydrogen-poor superluminous SNe (SLSNe I), luminous transients potentially powered by spinning-down magnetars. Before the main peak, there is a brief peak lasting Copyright © 2022, The Authors. All rights reserved.

关键词： Explosions

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Inside Back Cover: Irradiation-Wavelength Directing Circularly Polarized Luminescence in Self-Organized Helical Superstructures Enabled by Hydrogen-Bonded Chiral Fluorescent Molecular Switches (Angew. Chem. Int. Ed. 52/2021)

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Angewandte Chemie International Edition 2021年第52期60卷

作者： Yanrong He Dr. Shu Zhang Dr. Hari Krishna Bisoyi Jinghui Qiao Hong Chen JingJing Gao Prof. Jinbao Guo Prof. Quan Li Key Laboratory of Carbon Fibers and Functional Polymers Ministry of Education College of Materials Science and Engineering Beijing University of Chemical Technology Beijing 100029 China Institute of Advanced Materials School of Chemistry and Chemical Engineering Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research Southeast University Nanjing 211189 China Advanced Materials and Liquid Crystal Institute and Chemical Physics Interdisciplinary Program Kent State University Kent Ohio 44242 USA

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Optimization of Pomelo juice Citrus maxima (***.) Vacuum Concentration by Response Surface Methodology in Pilot scale

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IOP Conference Series: Materials Science and engineering 2021年第1期1092卷

作者： T Y N Tran T P Dao P T N Nguyen T N Pham B L Huynh H C Mai, X P Huynh T T Tran NTT Hi-Tech Institute Nguyen Tat Thanh University Ho Chi Minh City Vietnam Vietnam Academy of Science and Technology Department of Chemical Technology Nong Lam University Ho Chi Minh City Viet Nam Department of Chemical Engineering University of Food Industry Ho Chi Minh City College of Agriculture Can Tho University Can Tho City Vietnam

Because of its healthful nutritional properties, pomelo is gaining traction in the food and beverage industry. Pomelo juice concentration as a beverage provides vitamins, antioxidants, and energy. The Design Expert 11 calculation software is used to optimize the concentration process parameters, the temperature range is determined to include ± a values converted as axial. The results showed a positive correlation between the two factor variables and the obtained target function (TPC), the optimal value for the selected procedure was based on 79 °C with a time of more than 1.78 hours. At this point, TPC retention is 71.121%.

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Irradiation-Wavelength Directing Circularly Polarized Luminescence in Self-Organized Helical Superstructures Enabled by Hydrogen-Bonded Chiral Fluorescent Molecular Switches

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Angewandte Chemie 2021年第52期133卷

Two light-driven chiral fluorescent molecular switches, ( R , S , R )-switch 1 and ( R , S , R )-switch 2 , are prepared by means of hydrogen-bonded (H-bonded) assembly of a photoresponsive ( S ) chiral fluorescent molecule, respectively with a cyano substitution at different positions as an H-bond acceptor and an opposite ( R ) chiral molecule as an H-bond donor. The resulting two switches exhibit tunable and reversible Z / E photoisomerization irradiated with 450 nm blue and 365 nm UV light. When doped into an achiral liquid crystal, both switches are found to be able to form a CPL tunable luminescent helical superstructure. In contrast to the tunable CPL characteristics of the system incorporating switch 2 , exposure of the system incorporating switch 1 to 365 nm and 450 nm radiation can lead to controllable different photostationary CPL behavior, including switching-off and polarization inversion. In addition, optical information coding is demonstrated using the system containing switch 1 .

关键词： circularly polarized luminescence handedness inversion hydrogen-bonded chiral fluorescent switch luminescent helical superstructures

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